Small script that sometimes elicits a memory error

[Kingsley G. Morse Jr.]

Configuration Information [Automatically generated, do not change]:
Machine: i486
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  -I../bash -I../bash/include -I../bash/lib   -g -O2 -Wall
uname output: Linux debian1.loaner.com 2.6.25-2-686 #1 SMP Fri Jun 27 03:23:20 UTC 2008 i686 GNU/Linux
Machine Type: i486-pc-linux-gnu

Bash Version: 4.0
Patch Level: 33
Release Status: release

Description:

        Sometime the following code causes:

        malloc: ../bash/subst.c:4198: assertion botched
        realloc: start and end chunk sizes differ
        Aborting...tmp/bug: line 283:  9468 Done
              9469 Aborted                 (core dumped)

Repeat-By:

read -d '' v <<EOF
010.4
074.67
37.33
3616
40.82
2099
023.7
000382
000382
205.01
205.01
0866
0155.1
0623
111.58
3000
0960
240
240
10.4
104
9.4
94
3900
44.031
2050
23.144
7
7
7
7
400
400
395
395
390
390
385
385
380
380
375
375
370
370
365
365
360
360
355
355
350
350
345
345
340
340
335
335
330
330
325
325
320
320
315
315
310
310
305
305
300
300
295
295
290
290
285
285
280
280
275
275
270
270
265
265
260
260
255
255
250
250
245
245
240
240
235
235
230
180
175
175
170
170
165
165
160
160
155
155
150
150
145
145
140
140
135
135
130
130
125
125
120
120
115
115
110
110
105
105
100
100
95
95
90
90
85
85
80
80
75
75
70
70
65
65
60
60
55
55
50
50
45
45
40
40
35
35
30
30
25
25
20
20
15
15
10
10
5
5
0
0
5
5
370
365
365
360
360
355
355
350
350
345
345
340
340
335
335
330
330
325
325
320
320
315
315
310
310
305
305
300
300
295
295
290
290
285
285
280
280
275
275
270
270
265
265
260
260
255
255
250
250
245
245
240
240
235
235
230
130
125
110
110
105
105
200
200
13189
682.1
60.3
554.3
0049
2498.899
025.321
85.5436
36.8847
450.9854
08717.988
87.5753
77.4046
63.1502
13.6946
EOF

f(){
    echo "$v" |
        while read d ; do                                                                        
            while read c ; do                                                              
                :
            done < <(echo a)
        done
}

f b

[Chet Ramey]

change@... wrote:

> Configuration Information [Automatically generated, do not change]:
> Machine: i486
> OS: linux-gnu
> Compiler: gcc
> Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H   -I.  -I../bash -I../bash/include -I../bash/lib   -g -O2 -Wall
> uname output: Linux debian1.loaner.com 2.6.25-2-686 #1 SMP Fri Jun 27 03:23:20 UTC 2008 i686 GNU/Linux
> Machine Type: i486-pc-linux-gnu
>
> Bash Version: 4.0
> Patch Level: 33
> Release Status: release
>
> Description:
>
> Sometime the following code causes:
>
>         malloc: ../bash/subst.c:4198: assertion botched
>         realloc: start and end chunk sizes differ
>         Aborting...tmp/bug: line 283:  9468 Done
>               9469 Aborted                 (core dumped)

I am unable to reproduce it.

Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@...    http://cnswww.cns.cwru.edu/~chet/